<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
    <script src="vue.js"></script>
</head>
<body>
    <div id="app">
        <select name="" id="">
            <option value="" v-model:>苹果</option>
            <option value="">菠萝</option>
            <option value="">栗子</option>
            <option value="">西瓜</option>
            <option value="">哈哈</option>
        </select>
        水果是{{frult}}

    </div>
    <script>
        new Vue({
            el:'#app',
            data:{
                frult:'苹果'
            }
        })
    </script>
</body>
</html>